Pile fabric



Patented Aug. 11, 1931.

UNITED STATES mm DBEYFUS, OF NEW. YORK, N. Y.

PILE FABRIC ll'o Drawing.

This invention relates to the preparation of (pile fabrics having yarns of natural silk an yarns of artificial filaments containing organic esters of cellulose.

Q An object of my invention is to produce pile fabrics having both yarns of natural silk and yarns of organic esters of cellulose therein, wherein the yarns of the organic esters of cellulose have a natural luster or 10, sheen. Objects of my invention will appear from the following detailed description.

In the ordinary textile operations involving the manufacture of fabrics containing natural silk, the practice is to weave the silk yarn while it still has the gum therein in order that the silk may have suflicient strength to withstand the drastic strains due to textile operations. I have found, however, that if silk, while in the gum, is woven with yarn containing organic derivatives of cellulose, after the fabric is finished, the yarns of the organic derivatives of cellulose lose some of their luster and sheen in the process of oil the fabric to remove the gum from the natural silk even. if the degumming of the silk is carried out at comparatively low temperatures, say" for instance, 80 C. Sincezpile fabric such as velvet depends so much for its beauty on the sheen of the yarn, if a mixed fabric containing natural silk and organic ester of cellulose yarn were made in this manner, the luster of the same would become so subdued by the boiling off process that its effect would be materially reduced. I have found that if natural silk yarn is first degummed to an appropriate extent and then woven into pile fabric, a product is produced that has a beautiful luster and sheen after the dyeing and finishing operations have been accomplished.

In accordance with my invention I prepare a pile fabric from yarns of organic esters o cellulose that are apt to become delustered when boiled with water or aqueous liquids and natural silk yarn. from which the gum has been previously removed to the extent re uired for the particular case. The orgamc esters of cellulose employed for making the yarn to be used in Application filed November 3, 1928. Serial No. 817,126.

my invention may be any suitable ones such as cellulose acetate, cellulose formate, cellulose propionate and cellulose butyrate. These yarns may be associated with yarns of other materials such as cotton, wool or flax. As stated the silk yarn to be used is first degummed to the desired extent prior to weavlng.

The organic ester of cellulose yarn and the so degummed natural silk arn are then woven into any suitable pile abric such as transparent velvet, printed velvet or heavier velvet. that the back thereof is entirely or mostly of natural silk while the pile is composed entirely of yarn made of cellulose acetate. If desired the pile may be made wholly of natural silk while the back is made of cellulose acetate yarn. Likewise the back may be made entirely of natural silk and the pile of mixed natural silk and cellulose. acetate yarn or vice versa. Yarns of other materials such as cotton or reconstituted cellulose (artificial silk) may also be used either in the back or in the pile or both.

Since the fabric made in accordance with my invention does not have to be subjected to a degumming or boiling off treatment to remove the gum from the silk, there is no danger of the yarns of the organic esters of cellulose becomin delustered. By my rocess, therefore a nished pile fabric of the natural beautiful sheen or luster of or anic esters'of cellulose yarn is produced. rom the point of view of economy, my process is of great advanta e since the natural silk may be degumm as above at higher temperatures and in much less time.

The pile fabric made by my invention may be subjected to any desired finishing treatment such as dyeing, scouring, printing, etc. as is well understood in the art.

It is to be understood that the foregoing detailed description is given merely by way of illustration and that many variations may be made therein without departing from the spirit of this invention.

Having described my invention what I claim and desire to secure by" Letters Patent 1s:

The fabric may be constructed so.

1. Method of making pile fabric containing natural silk and yarns of organic esters of cellulose that is apt to become delustered when exposed to boiling water comprising 5 degumming undyed natural silk to the desired extent and then weaving the undyed degummed silk together with said organic ester of cellulose yarn in such a manner as to form a pile fabric which need not be sub- 10 jected to a degumming process, whereby finished fabric having the natural sheen or luster of the organic ester of cellulose yarn may be produced.

2. Method of makin pile fabric con- 15 taining natural silk an yarns of cellulose acetate that is apt to become delustered when exposed to boiling water comprising degumming undyednatural silk to the desired extent and then weaving the undyed de- 2 gummed silk together with said cellulose acetate am in such a manner as to form a pile abric which need not be sub'ected to a degumming process, whereby finis ed fabric having the naturala sheen or luster of the 25 cellulose acetate yarn ma be reduced.

In testimony whereo I ave hereunto subscribed my name.

CAMILLE DREYFUS. 

